Artificial stone or like composition.



l lh i.,'illii JOHANN SECUNDUS KBUSE, OF LONDON, ENGLAND.

ARTIFICIAL STONE OR LII E COMPOSITION.

till" l lo Drawing. Application filed Maya" lilo it known that l. Joinxv hix'l'xniis .liui'si: 21 subject of tho ticrlnun Emperor. and reiiidino' at in llhn lurlt Hui-dons, in thc county of London. liugzhinih have invented cci'tuin ncu' and Iu' 'iul luiprovenicnts in and licluting to rlrtiliciul Stone or like llomporsitions, of which the following is a specification.

This invention relutcs to the production artiticiui stone compositions und has for its object to produce a composition oi. till: kind with an ouumehlihc surface without iurnucing for line art and like purposcu.

This invcntion consist in u body with :in cnz'uncl'liho surince fol-mod of un oxid of magnesium and it chlorid of magnesium together with sufficient of u gum or resinous body to the desired surhn'c.

'lhc inrontion also consists in the improvc-tl compositions herein indicated. I

In carrying the invention into ctl'ect, in one form by way of exumple l take three parts by weight of calcined magnesium oxid; tour-parts weight of a solution of mag- --.uesinm chlorid and one part by weight of'u gum solution,

The magnesium oxid to which I have relferrod is of a good quality of which 1. grain in weight eluuls 1.? cuhic contimctcrsin volume with modcrute blinking that is of no tunl specific gravity about 3.

The magnesium chlorid solution is formed by dissolving muguesiruu chlorid crystals in just much cold water as is .sutlicient for solittlfln. With ordinary m'zlgnesium chlorid cryittals about one part by weight of cold *n'u'tonin required for one partl'iy weight of crystals but with specially pure and dry crystals two parts by weight, of water may ho required. This solution contains H grams of MgCh per liter at C.

The gum SDlllllOll is a 23% solution of orange shellac dissolved in 90% alcohol to which a little lavender oil has been added.

The mugncsiuni chlorid. and gum solu {ions are mixed together and the magnesium onid then carefully stirred in; orthe mag' 'nez-eicui oxid may lm stirred' in the chlori d solution nod tho gum solution subsequently added. By this unions :1 mlxture of the consul-one 0t crcam is obta ned ivh-ichiis Specification of Letters Patent.

$311. Serial No 629,921.

po urcd into molds and set at such a tem 'pciuturo that in a few days it forms a hard cnumel an analysis of which shows it to be '()Ill1)()SC(l ot upproxlmutelyt ll ydru tcd oxychlorid of n'mgnesiun'i 80. 5% S'hcllzu: resinate of magnesia -u 4.59;, Moisturc Q 112.5% ('onuncrciul impurity (calcium sulfate) u u u- 2. Z:

some lllllglltfilllll'l carbonate-being formed as tho cnuniel ages.

Tho mixture can be stirred almost to setting point or for some shorter time. The longer it is stirred provided the material is not actually setythe more homogeneous the result, so that if :1 result he desired in which the upper surface is :1 little harder than the hulk of the mixture stirring should not be cll'ccted at so lute a stage as it' a homogt-neous product he required. The result is a cou'iposition including the followingsuliistances in substantially the atins mentioned, -viz:nwgncsium oxid (lllgO) of density 3, l5 partm magnesium chlorid (MgCl 6 parts and shellac 1 part.

It may be explained that tllo'reason for aiding :1 gum, or like solution in the cornposition is; that increase of the resistance quality of the enamel especially when the some is in thin pieoes fls made possible. The gum further lllt'tliOS the enamel smoother and gives or improves the natural polish us well as tilting the colors or the like so that they will not rub off, no that a surface is obtained which improves by wear and retains nuirhle or like patterns incorporated with the composition in its liquid orscmi-liquid state. it; will ,he understood that the above example is'given 'by' way of illustration merely, mid modifications may be made as desired, for example any suitable coloring matter maybe incorporated with the mixture. and I find that this coloring is held tirmly in the enamcl und that: it is. not deteriorated by abrasion. Also othgngums or resins may be employed such for example as gum mastic and any desircl solve'zit 'used therefor but it; will li understood that the Pot outed Nov. 1 it 1 913'.

proportions at the composition may rqniref made as httle as usin lllfEllOII in fact, is practically no "through the ting.

variation with difierent gums and with difas that of the medium oxid may vary from 8 to approximately. The medium is usually about 1.7 and the light about 0.3 to 0.4 The heavy oxid is far too expensive for practical purposes and does, not give a better product thanthe medium: in fact, it is often worse. Again, the light oxid gives a product which is too chalky and more like that which would be obtained with plaster of Paris. a

As regards the chlorid solution, the forma his given herein uses 4 parts of this solution to 3 parts of the oxid. If a. change be H 3 arts of the chlorid to dparts of the oxi the result is greatly good. Again, it-the quality of chlorid be increased to b'parts of chlorid with 3 parts of oxid,

the chlorid. is in excess and oozes out pores of the mixture after sot- With'regard to the gums, about the same quantities of the gums are required whether shellac mastic, orsandarac be used, and although the quantity of these gumsmay be reduced, the same effect is not obtained and again, if the quantity be increased for instance to 2 parts of a alcohol solution instead, of one part the alcohol afi'ects the magnesium chlond solution and an inferior result is obtained.

Further, the oil of lavender or the like can be omitted if desired as it is not essential to the composition although when used its odor is retained for a considerable period.

By means of the present invention'an ename like compositlon is obtained which is cheap and without furnacing equals in hard ness .fiirnaced enamel of the opaque kind withstands atmospheric changes of heat, cold or' damp and takes any desired shape during formation. It can be colored any shade also marblcd or atterned in any desired way as by mixing with flakes or dust of any suitable .kind such as metal, mother-of-pearl, mica, colored sands, or the like, which as with other objects it firmly holds giving effects not deteriorated by ordinary wear.

iAlthough it has on its upper or exposed surface a substantiallynatural olish this can if desired be increased by slig t rubbing or it ma if desired be painted upon or gilded or p0 ished as with wax, French or other polish or varnish and can be used for fine and small articles in fine art work, including Vernis Martin work.

An enamel like composition according to the present invention can be utilized for the formation of high class artistic tiles, panels or the like formed with or without a basis such as wood or metal. In this case flint or the like added to the mixture roduoes an artistic effect particularly suitab e as a background when patterns are incorporated. It will be understood that this addition of flint to the mixture or the addition of colored sands, mica, metal or other bodies of the kind referred to above varies the surface of the mixture. With flint incorporated throughout the mass for instance the surface obtained is smooth-but not so glossy as without flint, the change of surface .gepending on the quantity and fineness of flin used. With metal dust orbodies added to the surface only a smoothglossy surface is obtained brokenupj-bythe metal particles. Thus by suitably choosing the added bodies and the manner of adding any desired artistic efi'ect can be produced.

It is also useful as a cement for tiles or other ornamental objects because the cement can appear where desired as an ornament-or decoration in the finished work.

An enamel like composition according to the present invention can be inlaid or applied to substances such as wood, v.Inetal, stone, glass, earthenware, ivory, or leather for decorative purposes and can be used for 1 (ill mosaic Work and cloisonn work and in all cases where translucent enamels are not essential.

Having now described my invention what I claim as new and desire to secure by Letters Patent is t-- a 1. A composition of matter consisting of three parts of magnesium oxid of approximate density 1.7 four parts'of a cold 9. ueous saturated solutionof magnesium chlorid and one part of a 25% alcoholic solution of 1.v

shellac; as and for the purpose set forth.

2. An artificial stone or like composition comprising the following substances in the proportions specified, viz:-three parts of calcined magneslum 02nd of an approximate ,density 1.7 about four parts of acold aqueous saturated solution of magnesium chlorid and about one part of a 25% alcoholic solution of a resinous body; as set forthrr 3. An artificial stone or like composition including'the following substances in substantially the ratios (by wei ht) specified, viz :-magnesium oxid (h4g0? of apparent density-about 1.7, l5 parts, magnesium chlorid-(MgCll 6 parts and a resinous'bodwv 1"part. :4? An artificial stone or like composition including the following substances insubstnntially the ratios (by Weight) specified, ,viz:-1nagnesi1un oxid (MgO) of apparent nxyrhlorid of magnesium and a resiniite of magnesia in about the weight.

In testilnony'whereof, I affix my signature in presence of two Witnesses.

, JOHANN SECUNDUS KRUSE. 'VVitnesses: I

PERCY RAYNER SMITH, P. A. OUTHWAITE.

proportibn 20 to 1 by 10 

